A built-in self-test (BIST) circuit for detecting power supply droops is disclosed. In one
embodiment, the BIST circuit includes a transition circuit configured to launch logical signals …

(57) ABSTRACT A circuit for detecting a Voltage change is described. The circuit includes a
Supply insensitive pulse generator that gen erates a pulse signal. The circuit also includes a …

Voltage monitors include a predelay cell having an input responsive to a first clock signal.
This cell is configured to generate a predelayed clock signal at an output thereof. A serially …

Power Supply variations and jitter are measured by monitor ing the performance of a ring
oscillator on a cycle-by-cycle basis. Performance is measured by counting the number of …

A method and apparats for undervoltage detection and correction is disclosed. An IC
includes sensors implemented in various functional circuit blocks. The sensors are …

Ltd.(57) ABSTRACT A monolithic integrated circuit device may include a Supply Voltage
glitch detector for detecting improper Supply Voltage conditions. Advantageously, the …

When an operation of a specified one of monitor circuits is defective or any of elements
forming a ring oscillator in each of the monitor circuits has characteristic abnormality, if …

(57) ABSTRACT A processor includes a plurality of voltage droop detectors positioned at
multiple points of a processor. The detectors monitor voltage levels and alert the processor if …

A circuit includes a ring oscillator and a state capture register to receive a multi-bit state of
the ring oscillator captured upon occurrence of an edge of input periodic signal. The circuit …

A processing system includes one or more power supply monitors (PSMs) to measure one
or more first voltages corresponding to one or more locations in the processing system. The …